One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,6,8)(3,4,5,7)(9,10,13,16)(11,12,15,14)(17,18)(19,23)(20,22)(21,24)(27,31)(30,32)(1,3,6,5)(2,7,8,4)(9,11,13,15)(10,14,16,12)(17,19,22,21)(18,23,20,24)(26,29)(30,32)(2,8)(3,5)(11,15)(12,14)(17,18,22,20)(19,24,21,23)(25,26,28,29)(27,30,31,32)(1,4,6,7)(2,3,8,5)(9,10)(11,14)(12,15)(13,16)(17,20,22,18)(19,23,21,24)(1,5,6,3)(2,7,8,4)(9,12,13,14)(10,15,16,11)(17,21,22,19)(18,23,20,24)(25,27,28,31)(26,30,29,32)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.